If your AC isn’t cooling like it used to, the problem might be sitting right outside — covered in dust, leaves, and West Texas grit. A dirty outdoor unit can choke airflow, overwork your system, and spike your energy bills.
Since 1985, Action Air Plumbing & Septic has helped Midland homeowners keep their HVAC systems running clean and efficient — especially when the heat rolls in. In this guide, we’ll show you how to safely clean your outdoor AC unit so it performs better and lasts longer.
Ready to give your AC the care it needs before summer kicks into full gear? Let’s get started.
Why a Clean Outdoor AC Unit Matters
A clogged or dirty outdoor unit can’t breathe properly, which means your system has to work harder just to keep you cool. Over time, that strain can wear down parts and shorten the life of your AC.
Dust and debris block the coils from releasing heat, which reduces efficiency and drives up your energy bill. You might also notice warm air blowing inside, longer run times, or uneven cooling throughout your home.
Regular cleaning helps restore proper airflow so your unit doesn’t have to overcompensate. This keeps your cooling strong, your system healthier, and your utility costs under control.
In West Texas, outdoor AC units face extra punishment from dry soil, flying grass clippings, and long spells of scorching heat. Without regular care, all that grime builds up fast — and your AC pays the price.
Safety First: What to Know Before You Start
Before touching anything, cut the power at the breaker box to avoid electric shock or damage to your system. Flip the breaker switch labeled “AC” to the off position, then double-check that the thermostat is turned off too.
Here’s what you’ll need to clean your AC unit:
- Gloves and safety glasses
- Screwdriver or nut driver
- Shop vacuum with soft brush attachment
- Garden hose with a gentle spray nozzle
- Foaming coil cleaner (AC-safe only)
- Fin comb (for straightening bent fins)
Skip the DIY route if you see any of the following: bent or broken parts, signs of burning or melted wiring, or suspected refrigerant leaks. These need professional attention — and Action Air in Midland is just a call away.
Step-by-Step Guide: How to Clean Your Outdoor AC Unit
Cleaning your outdoor AC unit doesn’t take long, but it makes a big difference. Follow these simple steps to get it done safely and effectively.
1. Clear the Area Around the Unit
Start by removing anything that’s gathered around the unit—leaves, twigs, grass, or even trash. This debris can block airflow and trap heat, forcing your system to work harder.
Trim back any bushes or tall grass to create at least 1 to 2 feet of open space around the unit. Good airflow around the coils is key to keeping things cool and efficient.
2. Remove the AC Cover or Top Grille
Turn off the power before loosening anything. Use a screwdriver or nut driver to carefully remove the screws holding the top grille or cover in place.
Lift the top cover slowly, keeping an eye out for any fan wires that may still be attached. If wires are connected, don’t tug — just set the cover gently to the side.
3. Clean the Inside of the Unit
Slip on your gloves and use a vacuum to remove dirt, leaves, and other loose debris inside the unit. Go slow and use a soft-bristle attachment to avoid damaging anything.
Check for signs of pests, chewed wires, or visible damage. In West Texas, it’s not unusual to find bugs or even small critters nesting inside.
If you notice chewed wires, unusual smells, or signs of electrical damage, it’s best to stop and call a licensed HVAC technician. Action Air Plumbing & Septic has helped homeowners handle these issues safely.
4. Clean the Condenser Coils
Spray the coils evenly with an AC-safe foaming coil cleaner. Let the cleaner sit as directed on the label to loosen buildup.
After it foams up, rinse the coils gently from the inside out using a garden hose. Avoid pressure washers — they can bend the fins or push water where it shouldn’t go.
Not comfortable doing this on your own? Action Air offers affordable coil cleaning as part of our seasonal AC tune-ups right here in Midland.
5. Straighten Bent Fins (Optional)
Fins that are bent or crushed can block airflow and reduce performance. If you spot any, use a fin comb to straighten them gently.
Work slowly and in one direction to avoid making things worse. You don’t have to fix every bend, but the more open the fins, the better the airflow.
6. Reassemble and Restore Power
Once everything is clean and dry, place the top cover back and secure it with screws. Make sure no tools or debris are left inside.
Turn the breaker and thermostat back on and let the system run for a few minutes. If everything sounds and feels normal, your AC is good to go.
How Often Should You Clean Your Outdoor AC Unit?
Aim to clean your outdoor AC unit at least once a year, ideally in the spring before the summer heat kicks in. This helps your system stay efficient when you need it most.
It’s also smart to do a quick inspection after major events that can clog up your unit.
Watch out for:
- Dust storms, which are common in West Texas and can pack dirt deep into the coils
- Heavy pollen buildup, especially in early spring
- Yard work or landscaping, like mowing or trimming near the unit
Seasonal tune-ups are a great way to stay ahead of problems — and you don’t have to do it alone. Action Air Plumbing & Septic offers full-service HVAC maintenance across Midland and surrounding areas to keep your system running at its best all year.
Common Signs Your AC Unit Needs Cleaning
If your AC isn’t pushing out cool air like it used to, clogged coils or debris buildup could be the reason. Weak airflow is one of the first signs your unit is struggling to breathe.
Other red flags to watch for include:
- Strange noises coming from the outdoor unit, like buzzing or rattling
- Rising energy bills with no change in usage
- AC running nonstop but barely cooling the home
If you’re seeing any of these signs, it may be time to clean — or call a pro. Action Air Plumbing & Septic is just a call away for trusted HVAC service in Midland.
When to Call a Professional
Some issues go beyond dirt and dust and need a trained technician. If you notice the following, stop and get help:
- Ice forming on the refrigerant lines or coils
- Burnt wiring or melted insulation
- Strong smells or loud, unusual sounds
- Bent or broken components inside the unit
If your unit hasn’t been professionally serviced in over a year, it’s time. Action Air offers same-day HVAC service across Midland and the Permian Basin — fast, safe, and done right the first time.
Extra AC Maintenance Tips for Hot Texas Summers
A clean AC unit is a great start, but a few extra steps go a long way during peak heat. Here’s how to keep things running smoothly:
- Change your air filters every 1–3 months to avoid airflow issues
- Keep vents and returns clear from rugs, furniture, or dust buildup
- Install a programmable thermostat to reduce strain and save energy
For easy, affordable maintenance, sign up for Action Air’s Preventative Maintenance Agreement and rest easy knowing your unit is taken care of. Our maintenance plan includes bi-annual checkups and a range of other benefits. Call us anytime at (432) 620-8900 to learn more, or visit this page.
Frequently Asked Questions
Can I use vinegar or household cleaners on my AC coils?
It’s best to avoid household cleaners like vinegar, bleach, or soap on AC coils. These can damage the aluminum and may not effectively remove grime — use a cleaner made specifically for HVAC systems.
Is it safe to cover my outdoor AC unit when not in use?
You don’t need to cover the unit in mild climates like Midland, but if you do, use a breathable cover that doesn’t trap moisture. Trapped humidity can cause rust or attract pests.
How long does it take to clean an outdoor AC unit?
A basic cleaning takes about 30 to 60 minutes, depending on how dirty it is and how comfortable you are using the tools. Deeper maintenance might take longer, especially if you need to inspect or repair damaged parts.
Will cleaning the AC unit make it blow colder air?
Yes, it can help improve cooling by removing blockages that restrict airflow and heat transfer. If the unit is still not cooling after cleaning, it might need professional servicing.
What happens if I never clean my outdoor AC unit?
Dirt buildup can cause your system to overheat, wear out faster, and eventually fail. You’ll likely see higher energy bills and weaker cooling until the unit gives out entirely.
Stay Cool and Save More
A clean outdoor AC unit runs better, lasts longer, and keeps your home cooler without driving up your energy bill. Just a little maintenance can make a big difference — especially in the heat of West Texas.
Stay ahead of the dust, heat, and wear by making cleaning part of your seasonal routine. And when it feels like too much to handle, don’t stress it.
Not sure where to start? Let Action Air handle it. Call (432) 620-8900 or book online for fast, reliable service in Midland and the surrounding area.
